Appwrite 1.7.4
Self hosting on Netcup, I have root server with 4 cores, 8Gb RAM
I've uploaded 55Mb file to storage (11 chunks).
Whenever I try to download it (through console, curl or SDK's getFileDownload) I get only 20Mb or 30Mb downloaded after that download hangs.
I've checked logs with docker logs -f appwrite
and got this:
[2025-10-08 14:12:44 #1.0] WARNING Server::send_to_connection() (ERRNO 1009): connection#112 output buffer overflow
[2025-10-08 14:12:44 *31.19] WARNING ProcessFactory::finish() (ERRNO 1009): send failed, session=1 output buffer overflow
[2025-10-08 14:12:44 *31.19] WARNING ProcessFactory::finish() (ERRNO 1009): send failed, session=1 output buffer overflow
[2025-10-08 14:12:44 *31.19] WARNING ProcessFactory::finish() (ERRNO 1009): send failed, session=1 output buffer overflow
[2025-10-08 14:12:44 *31.19] WARNING ProcessFactory::finish() (ERRNO 1009): send failed, session=1 output buffer overflow
[2025-10-08 14:12:44 *31.19] WARNING ProcessFactory::finish() (ERRNO 1009): send failed, session=1 output buffer overflow
I thought this is related to not enough memory.
However, when I check memory usage during download with: docker stats appwrite
I see that my memory usage is 243.6MiB / 7.751GiB
and during download it becomes something like 260MiB / 7.751GiB
Is there any limit for memory usage when file is downloaded, that I can change?
Or maybe it is not related to that at all?
TL;DR
Issue: Download hangs when trying to download a 55Mb file with Appwrite 1.7.4
Error Message: Connection's output buffer is overflowing
Analysis:
- Developer is self-hosting Appwrite on a Netcup root server with 4 cores and 8Gb RAM
- While downloading the file, the memory usage remains below 300MB
- Docker logs show an output buffer overflow warning
Solution:
- The issue is not related to memory usage
- Increase the server's output buffer size to resolve the download hang issue
